Author: Theodore C. F. Munday Publisher: ISBN: Category : Languages : en Pages : 228
Book Description
A series of materials were prepared and tested as decomposition catalysts for 98% H2O2. Thirty different compositions were pelletized at high pressure and heat treated. Extent of reaction between the components was indicated by x-ray diffraction patterns. Catalytic activity was measured by a standard flood test with 10 ml. of 98% H2O2. Mechanical strength and susceptibility to leaching and erosion were observed. Catalyst materials and a modified 40 pound thrust motor were prepared for the motor test program.
Author: Paul L. Garwig Publisher: ISBN: Category : Catalysts Languages : en Pages : 158
Book Description
The literature on the heterogeneous decomposition of hydrogen peroxide by inorganic catalysts was surveyed. The aim was to provide background information useful in the development of new catalysts for high-strength hydrogen peroxide in propulsion applications. The survey was prepared as part of a research program on the development of active, stable catalysts for decomposing 98 per cent hydrogen peroxide. Published literature, technical reports, and patents in the period 1945-1965 were included. The survey showed that silver and platinum are the most extensively investigated catalysts. Other major catalysts are palladium, copper, iron, cobalt, manganese, and their compounds. Various methods have been proposed for increasing catalytic activity by additives that promote the parent activity of elements or compounds. Samarium nitrate-treated silver, cobalt-manganese oxide mixtures, ruthenium and its compounds, and silver-gold alloys are the most active catalysts that have been reported.
Author: Van Lorens Bohnson Publisher: Franklin Classics Trade Press ISBN: 9780353453425 Category : History Languages : en Pages : 74
Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Van Lorens Bohnson Publisher: Nabu Press ISBN: 9781293696583 Category : Languages : en Pages : 76
Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ A Contribution To The Study Of The Catalytic Decomposition Of Hydrogen Peroxide; A Contribution To The Study Of The Catalytic Decomposition Of Hydrogen Peroxide; Van Lorens Bohnson Van Lorens Bohnson University of Wisconsin--Madison, 1920 Science; Chemistry; Inorganic; Hydrogen peroxide; Science / Chemistry / Inorganic
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Hydrogen peroxide (H2O2) is a strong oxidizing agent. High concentration H2O2 or High Test Peroxide (HTP) has been used extensively in the past in propulsion applications as mono and bipropellant. At low temperature, HTP can be catalytically decomposed to water and oxygen. Drawbacks to this approach include catalyst poisoning due to the presence of stabilizers in HTP, and susceptibility of the metal catalyst to melting because of the intense heat release. This renders the use of catalysts not only inconvenient but also quite expensive. An alternate approach for HTP decomposition is thermal, where no catalyst is required. HTP decomposition is accompanied by the production of enormous amount of heat that often leads to runaway reactions and subsequent explosion. If the rate of thermal decomposition can be controlled, the ensuing technology would prove to be a viable and inexpensive alternative to using catalysts. This technology has the potential to replace any device that decomposes H2O2 catalytically. Also, the controlled thermal decomposer can be used as an accelerator to heat any substance quickly at the expense of very low power. In order to control non-catalytic HTP decomposition, a deeper understanding of the chemical mechanism for H2O2 decomposition must be developed. The current work reports the development of detailed kinetic steps for HTP decomposition over a wide range of temperature and pressure. The resulting mechanism is then used to perform CFD simulations of a commercial HTP decomposer (patented by Pratt & Whitney) to explore safe operating conditions. A similar strategy can be applied to model COIL technology.
Author: Theodore C. F. Munday
Author: Jack F. Runckel
Author: Paul L. Garwig
Author: Jack F. Runckel
Author: Van Lorens Bohnson
Author: Jack F. Runckel
Author: Van Lorens Bohnson
Author: Van Lorens Bohnson
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